PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-14:28:10
G02     211.9          53.9               12.4 +/-    0.61      14.9 +/-    0.61  0.070 / 0.080
G06     82.4           79.4               10.7 +/-    0.43      10.9 +/-    0.43  0.070 / 0.070
G12     316.8          30.9               10.2 +/-    1.03      17.6 +/-    1.03  0.090 / 0.110
G17     55.0           33.5                8.7 +/-    0.30      14.2 +/-    0.30  0.070 / 0.090
G19     35.8           51.1                9.0 +/-    0.45      11.2 +/-    0.45  0.030 / 0.030
G24     275.0          42.0                9.9 +/-    1.13      14.0 +/-    1.13  0.030 / 0.020
G28     119.5          16.9               10.9 +/-    1.70      25.9 +/-    1.70  0.040 / 0.080