PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-15:27:50
G01     108.2          25.0                9.0 +/-    0.70      17.6 +/-    0.70  0.030 / 0.040
G07     105.1          59.2               10.5 +/-    0.56      12.0 +/-    0.56  0.030 / 0.040
G08     42.0           21.5                6.8 +/-    1.23      14.4 +/-    1.23  0.030 / 0.040
G09     174.4          13.7               12.4 +/-    1.46      31.9 +/-    1.46  0.020 / 0.030
G11     90.3           42.7                9.3 +/-    0.34      13.0 +/-    0.34  0.110 / 0.340
G13     310.4          28.0                8.6 +/-    1.57      15.7 +/-    1.57  0.110 / 0.370
G17     205.7          35.8               12.3 +/-    1.38      19.2 +/-    1.38  0.070 / 0.140
G18     81.5           24.1                7.8 +/-    1.18      15.5 +/-    1.18  0.080 / 0.150
G28     315.6          60.8                9.3 +/-    0.60      10.5 +/-    0.60  0.060 / 0.200
G30     17.1           77.4               10.3 +/-    0.85      10.5 +/-    0.85  0.060 / 0.150