PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-16:57:50
G01     44.5           20.7                8.9 +/-    1.36      19.3 +/-    1.36  0.060 / 0.100
G06     174.8          34.2               14.3 +/-    1.04      23.0 +/-    1.04  0.050 / 0.090
G13     242.8          25.9               15.4 +/-    1.43      29.5 +/-    1.43  0.080 / 0.150
G15     278.6          13.6               11.5 +/-    0.79      29.7 +/-    0.79  0.080 / 0.170
G17     344.5          75.0               12.0 +/-    0.82      12.4 +/-    0.82  0.200 / 0.510
G19     258.3          63.0               11.8 +/-    0.71      13.1 +/-    0.71  0.170 / 0.410
G24     317.8          15.3                8.1 +/-    1.72      20.0 +/-    1.72  0.040 / 0.060
G28     63.5           49.7               11.4 +/-    0.46      14.4 +/-    0.46  0.050 / 0.070
G30     153.0          34.2               13.5 +/-    1.74      21.8 +/-    1.74  0.090 / 0.160