PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-17:27:40
G01     44.1           20.2                8.5 +/-    0.98      18.5 +/-    0.98  0.050 / 0.070
G06     174.8          34.8               13.8 +/-    1.21      22.0 +/-    1.21  0.050 / 0.080
G13     242.3          25.5               13.9 +/-    1.58      26.9 +/-    1.58  0.060 / 0.100
G15     277.8          13.5               10.9 +/-    0.95      28.1 +/-    0.95  0.060 / 0.100
G17     345.1          74.7               12.0 +/-    0.84      12.4 +/-    0.84  0.070 / 0.180
G19     259.8          63.6               11.8 +/-    0.67      13.0 +/-    0.67  0.080 / 0.180
G24     317.7          15.8                8.7 +/-    1.66      21.1 +/-    1.66  0.190 / 0.540
G28     64.4           49.4               11.3 +/-    0.75      14.4 +/-    0.75  0.170 / 0.380
G30     153.2          33.4               14.0 +/-    1.61      22.9 +/-    1.61  0.070 / 0.090