PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/22-04:58:10
G01     91.2           31.6                4.3 +/-    0.99       7.3 +/-    0.99  0.030 / 0.050
G07     124.7          45.9                5.3 +/-    0.84       7.1 +/-    0.84  0.030 / 0.040
G11     70.7           40.2                4.5 +/-    1.11       6.5 +/-    1.11  0.050 / 0.060
G13     296.8          34.9                2.5 +/-    4.93       3.9 +/-    4.93  0.070 / 0.040
G17     213.9          53.5                6.8 +/-    0.90       8.2 +/-    0.90  0.080 / 0.080
G19     214.2          27.4                6.1 +/-    2.10      11.3 +/-    2.10  0.090 / 0.090
G28     349.0          61.7                2.6 +/-    0.34       2.9 +/-    0.34  0.120 / 0.120
G30     104.0          74.7                4.9 +/-    0.48       5.0 +/-    0.48  0.090 / 0.100