PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-01:13:00
G01     62.5           31.3                4.1 +/-    1.15       7.0 +/-    1.15  0.030 / 0.040
G06     181.8          11.9                3.6 +/-   28.96       9.8 +/-   28.96  0.040 / 0.050
G07     141.3          24.7                6.3 +/-    1.11      12.5 +/-    1.11  0.060 / 0.070
G11     50.9           28.1                3.0 +/-    2.60       5.5 +/-    2.60  0.070 / 0.070
G13     266.2          35.8                7.6 +/-    1.36      11.8 +/-    1.36  0.030 / 0.030
G15     295.3          16.7                4.9 +/-    1.10      11.7 +/-    1.10  0.020 / 0.030
G17     248.5          72.9                6.2 +/-    0.66       6.5 +/-    0.66  0.170 / 0.290
G19     230.6          48.9                6.9 +/-    2.59       8.8 +/-    2.59  0.190 / 0.310
G28     33.1           57.1                5.5 +/-    0.93       6.4 +/-    0.93  0.100 / 0.230
G30     141.3          50.5                7.1 +/-    0.34       8.9 +/-    0.34  0.160 / 0.220