PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-18:28:10
G02     206.4          41.4               14.7 +/-    0.59      20.8 +/-    0.59  0.050 / 0.060
G06     132.5          76.9               12.4 +/-    0.53      12.7 +/-    0.53  0.050 / 0.060
G12     312.5          24.1               10.4 +/-    2.36      20.7 +/-    2.36  0.070 / 0.120
G17     42.7           44.0               11.7 +/-    1.82      16.0 +/-    1.82  0.080 / 0.120
G19     10.8           61.9               11.5 +/-    0.67      12.8 +/-    0.67  0.030 / 0.020
G24     287.3          41.7               17.5 +/-    2.54      24.8 +/-    2.54  0.030 / 0.020
G28     109.7          25.9               11.6 +/-    1.41      22.3 +/-    1.41  0.040 / 0.030