PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/24-13:12:50
G01     121.5          16.1                7.8 +/-    1.27      18.9 +/-    1.27  0.040 / 0.040
G07     73.1           67.8                6.8 +/-    0.45       7.3 +/-    0.45  0.030 / 0.030
G08     45.9           33.1                6.2 +/-    1.32      10.2 +/-    1.32  0.020 / 0.030
G09     176.1          27.2                6.7 +/-    1.16      12.4 +/-    1.16  0.020 / 0.030
G11     109.5          38.8                7.5 +/-    0.95      11.1 +/-    0.95  0.170 / 0.240
G13     318.8          17.4                5.1 +/-    2.00      12.1 +/-    2.00  0.160 / 0.250
G17     200.9          21.9                5.7 +/-    2.43      12.0 +/-    2.43  0.160 / 0.270
G18     96.8           19.7                6.6 +/-    1.89      14.7 +/-    1.89  0.160 / 0.220
G28     287.4          56.1                5.0 +/-    2.45       5.9 +/-    2.45  0.110 / 0.250
G30     340.2          65.5                6.0 +/-    0.42       6.5 +/-    0.42  0.110 / 0.220