PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-07:57:50
G01     75.6           33.2                5.2 +/-    0.87       8.5 +/-    0.87  0.030 / 0.040
G07     134.9          33.7                8.7 +/-    0.82      14.2 +/-    0.82  0.040 / 0.050
G11     56.9           32.7                3.5 +/-    1.23       5.8 +/-    1.23  0.040 / 0.070
G13     281.6          37.1                5.0 +/-    2.50       7.6 +/-    2.50  0.050 / 0.070
G15     306.0          14.6                0.9 +/-    2.30       2.3 +/-    2.30  0.030 / 0.030
G17     227.5          67.2                7.3 +/-    1.05       7.8 +/-    1.05  0.030 / 0.030
G19     221.4          39.8                6.6 +/-    1.50       9.6 +/-    1.50  0.080 / 0.210
G28     13.5           59.9                3.9 +/-    0.52       4.5 +/-    0.52  0.110 / 0.240
G30     129.9          65.2                7.4 +/-    0.28       8.1 +/-    0.28  0.080 / 0.100