PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-07:42:40
G01     90.8           31.6                6.3 +/-    0.91      10.6 +/-    0.91  0.050 / 0.050
G07     125.0          45.0                8.1 +/-    0.54      10.9 +/-    0.54  0.050 / 0.040
G11     69.4           39.2                6.0 +/-    1.13       8.8 +/-    1.13  0.050 / 0.050
G13     296.9          34.7                3.2 +/-    4.53       5.1 +/-    4.53  0.050 / 0.040
G17     213.9          54.7                7.8 +/-    0.62       9.3 +/-    0.62  0.050 / 0.040
G19     214.2          27.9                6.1 +/-    1.67      11.1 +/-    1.67  0.040 / 0.030
G28     349.3          61.7                3.9 +/-    0.34       4.4 +/-    0.34  0.080 / 0.090
G30     101.2          76.1                4.9 +/-    0.57       5.0 +/-    0.57  0.080 / 0.090