PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-18:28:10
G02     212.2          52.7               16.7 +/-    0.76      20.3 +/-    0.76  0.090 / 0.070
G06     73.7           77.0               14.9 +/-    0.40      15.2 +/-    0.40  0.040 / 0.100
G12     317.5          33.9               13.6 +/-    1.81      22.1 +/-    1.81  0.050 / 0.070
G17     52.5           36.2               13.1 +/-    0.57      20.4 +/-    0.57  0.040 / 0.070
G19     28.4           55.0               13.8 +/-    0.68      16.4 +/-    0.68  0.050 / 0.070
G24     271.8          42.8               14.5 +/-    1.06      20.1 +/-    1.06  0.060 / 0.090
G28     118.5          18.0               15.9 +/-    1.18      36.6 +/-    1.18  0.130 / 0.390