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                7.7 +/-    1.75      18.6 +/-    1.75  0.030 / 0.040
G07     73.1           67.8                5.7 +/-    0.69       6.1 +/-    0.69  0.040 / 0.040
G08     45.9           33.1                4.9 +/-    0.61       8.0 +/-    0.61  0.100 / 0.180
G09     176.1          27.2                8.5 +/-    0.67      15.8 +/-    0.67  0.150 / 0.190
G11     109.5          38.8                6.6 +/-    0.70       9.8 +/-    0.70  0.040 / 0.060
G13     318.8          17.4                3.4 +/-    1.49       8.1 +/-    1.49  0.040 / 0.060
G17     200.9          21.9                5.2 +/-    2.43      11.0 +/-    2.43  0.040 / 0.100
G18     96.8           19.7                7.1 +/-    0.91      15.8 +/-    0.91  0.040 / 0.100
G28     287.4          56.1                5.6 +/-    0.76       6.6 +/-    0.76  0.020 / 0.040
G30     340.2          65.5                4.6 +/-    0.68       5.0 +/-    0.68  0.020 / 0.040