PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-22:27:40
G02     202.8          34.9               14.6 +/-    1.72      23.2 +/-    1.72  0.150 / 0.300
G06     159.0          69.0               11.1 +/-    1.26      11.8 +/-    1.26  0.120 / 0.350
G12     307.4          15.1                8.3 +/-    2.01      20.5 +/-    2.01  0.060 / 0.100
G17     31.7           52.6               10.5 +/-    0.92      12.8 +/-    0.92  0.070 / 0.080
G19     356.9          66.1               10.0 +/-    0.93      10.8 +/-    0.93  0.090 / 0.140
G24     298.5          37.9               10.8 +/-    1.47      16.3 +/-    1.47  0.080 / 0.150
G28     102.1          31.3               11.4 +/-    0.87      19.4 +/-    0.87  0.060 / 0.090