PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-16:43:00
G01     45.2           21.0                7.3 +/-    0.69      15.6 +/-    0.69  0.080 / 0.220
G06     176.2          32.1               10.9 +/-    7.96      18.3 +/-    7.96  0.080 / 0.220
G13     245.9          26.6               13.8 +/-    1.71      26.0 +/-    1.71  0.060 / 0.080
G15     281.0          14.1               12.8 +/-    4.36      32.6 +/-    4.36  0.060 / 0.080
G17     352.9          74.4               10.6 +/-    0.78      11.0 +/-    0.78  0.030 / 0.040
G19     262.3          67.1                6.5 +/-   21.26       7.0 +/-   21.26  0.020 / 0.040
G24     318.9          11.9                7.9 +/-   14.54      21.2 +/-   14.54  0.060 / 0.150
G28     62.2           50.0               10.0 +/-    2.83      12.5 +/-    2.83  0.060 / 0.160
G30     152.7          37.0               11.1 +/-    1.03      17.1 +/-    1.03  0.220 / 0.370