PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-10:13:00
G01     77.8           33.3                4.2 +/-    1.35       6.9 +/-    1.35  0.050 / 0.060
G07     133.7          35.5                5.8 +/-    1.28       9.2 +/-    1.28  0.040 / 0.070
G11     57.1           33.6                4.2 +/-    2.29       6.8 +/-    2.29  0.030 / 0.030
G13     281.6          38.1                6.0 +/-    0.98       9.0 +/-    0.98  0.030 / 0.030
G15     311.4          11.1                0.2 +/-   13.99       0.4 +/-   13.99  0.050 / 0.090
G17     224.4          65.7                7.4 +/-    0.81       8.1 +/-    0.81  0.040 / 0.100
G18     52.6           19.9                2.6 +/-    4.89       5.8 +/-    4.89  0.060 / 0.090
G19     220.1          32.4                5.3 +/-    1.68       8.8 +/-    1.68  0.060 / 0.080
G28     6.8            60.8                4.3 +/-    1.36       4.9 +/-    1.36  0.340 / 0.230
G30     127.7          69.3                6.5 +/-    0.72       6.9 +/-    0.72  0.320 / 0.370