PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-09:43:00
G02     199.5          18.3                4.7 +/-    1.80      10.8 +/-    1.80  0.040 / 0.060
G06     176.0          47.2               10.8 +/-    0.81      14.2 +/-    0.81  0.060 / 0.060
G13     231.1          15.5                6.2 +/-    1.97      15.3 +/-    1.97  0.120 / 0.130
G17     20.4           61.2                6.0 +/-    0.72       6.7 +/-    0.72  0.120 / 0.140
G19     316.8          71.8                5.1 +/-    0.51       5.3 +/-    0.51  0.030 / 0.030
G24     313.0          25.8                4.6 +/-    1.31       8.7 +/-    1.31  0.040 / 0.030
G28     84.8           41.1                6.1 +/-    0.99       8.7 +/-    0.99  0.040 / 0.040
G30     156.5          17.4                8.1 +/-    1.44      19.1 +/-    1.44  0.060 / 0.050