PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-19:27:50
G01     99.0           29.2               14.5 +/-    1.69      25.8 +/-    1.69  0.130 / 0.210
G07     117.3          52.6               13.2 +/-    0.79      16.2 +/-    0.79  0.120 / 0.290
G08     42.0           16.5                9.7 +/-    1.80      23.2 +/-    1.80  0.020 / 0.070
G11     79.8           42.7               15.0 +/-    0.64      21.0 +/-    0.64  0.020 / 0.050
G13     303.0          32.7               10.6 +/-    1.56      17.6 +/-    1.56  0.060 / 0.140
G17     210.5          42.0               13.7 +/-    0.84      19.3 +/-    0.84  0.060 / 0.130
G18     72.4           24.9               13.9 +/-    0.73      27.2 +/-    0.73  0.040 / 0.070
G19     211.7          18.9               12.3 +/-    6.37      27.8 +/-    6.37  0.040 / 0.100
G28     334.2          61.8               12.1 +/-    0.68      13.5 +/-    0.68  0.040 / 0.040
G30     72.8           78.9               10.5 +/-    0.67      10.7 +/-    0.67  0.030 / 0.030