PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/07-05:58:10
G01     91.9           31.4                4.3 +/-    0.97       7.3 +/-    0.97  0.040 / 0.040
G07     124.1          46.1                6.0 +/-    0.74       8.0 +/-    0.74  0.040 / 0.040
G11     71.1           40.1                3.6 +/-    1.03       5.2 +/-    1.03  0.050 / 0.040
G13     297.6          34.5                3.1 +/-    4.07       5.0 +/-    4.07  0.050 / 0.040
G17     213.4          53.3                8.0 +/-    0.94       9.7 +/-    0.94  0.070 / 0.090
G19     213.9          26.9                5.2 +/-    1.41       9.8 +/-    1.41  0.090 / 0.090
G28     347.7          61.7                3.6 +/-    0.47       4.0 +/-    0.47  0.040 / 0.040
G30     100.5          75.7                5.3 +/-    0.60       5.5 +/-    0.60  0.030 / 0.040