PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-14:58:10
G01     95.6           30.1                7.6 +/-    0.95      13.3 +/-    0.95  0.050 / 0.050
G07     121.1          46.2                8.5 +/-    0.59      11.3 +/-    0.59  0.050 / 0.060
G08     41.9           9.9                 6.3 +/-    2.08      17.6 +/-    2.08  0.050 / 0.130
G11     72.5           38.9                6.8 +/-    1.17      10.1 +/-    1.17  0.050 / 0.140
G13     301.9          32.8                5.8 +/-    1.63       9.6 +/-    1.63  0.050 / 0.020
G17     210.6          51.1                8.2 +/-    0.67      10.2 +/-    0.67  0.050 / 0.020
G19     212.2          24.2               11.2 +/-    2.02      22.3 +/-    2.02  0.070 / 0.110
G28     339.0          61.7                7.1 +/-    0.44       7.9 +/-    0.44  0.070 / 0.110
G30     68.2           80.1                6.3 +/-    0.77       6.3 +/-    0.77  0.030 / 0.050