PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-01:12:50
G01     62.5           31.3                4.9 +/-    0.78       8.3 +/-    0.78  0.030 / 0.060
G06     181.8          11.9                8.1 +/-    5.21      21.7 +/-    5.21  0.040 / 0.060
G07     141.3          24.7                8.3 +/-    0.86      16.3 +/-    0.86  0.040 / 0.030
G11     50.9           28.1                3.3 +/-    0.83       6.1 +/-    0.83  0.020 / 0.030
G13     266.2          35.8                8.1 +/-    1.49      12.6 +/-    1.49  0.220 / 0.350
G15     295.3          16.7                5.2 +/-    1.22      12.4 +/-    1.22  0.110 / 0.270
G17     248.5          72.9                7.7 +/-    0.60       8.0 +/-    0.60  0.050 / 0.090
G19     230.6          48.9                9.2 +/-    1.11      11.8 +/-    1.11  0.040 / 0.080
G28     33.1           57.1                6.0 +/-    0.39       7.0 +/-    0.39  0.070 / 0.150
G30     141.3          50.5                8.1 +/-    0.94      10.1 +/-    0.94  0.080 / 0.130