PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/10-14:42:40
G01     108.1          25.0               10.2 +/-    1.37      19.9 +/-    1.37  0.040 / 0.020
G07     105.1          59.2               10.1 +/-    0.95      11.5 +/-    0.95  0.020 / 0.020
G08     42.0           21.0                7.8 +/-    2.64      16.7 +/-    2.64  0.080 / 0.140
G09     174.2          13.5                9.0 +/-    1.50      23.3 +/-    1.50  0.090 / 0.150
G11     90.0           42.6                9.8 +/-    0.92      13.7 +/-    0.92  0.040 / 0.040
G13     310.4          28.1                6.6 +/-    1.25      12.1 +/-    1.25  0.040 / 0.040
G17     205.5          36.3               10.1 +/-    0.93      15.6 +/-    0.93  0.070 / 0.150
G18     81.3           24.1                8.1 +/-    3.13      16.2 +/-    3.13  0.090 / 0.130
G28     315.5          60.8                7.7 +/-    0.72       8.7 +/-    0.72  0.100 / 0.130
G30     15.7           77.3                9.1 +/-    0.35       9.3 +/-    0.35  0.110 / 0.150