PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-15:27:40
G02     203.7          30.1               10.9 +/-    0.97      19.1 +/-    0.97  0.030 / 0.040
G06     156.4          68.6               10.2 +/-    0.93      10.8 +/-    0.93  0.030 / 0.040
G12     307.9          18.1                8.7 +/-    0.79      20.1 +/-    0.79  0.060 / 0.120
G17     35.7           49.4                8.4 +/-    0.73      10.7 +/-    0.73  0.120 / 0.150
G19     347.3          67.4                8.2 +/-    0.68       8.8 +/-    0.68  0.040 / 0.030
G24     298.4          38.4                9.9 +/-    0.90      14.7 +/-    0.90  0.040 / 0.040
G28     100.5          32.6                8.8 +/-    1.37      14.7 +/-    1.37  0.100 / 0.080