PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/22-10:42:40
G01     45.4           21.3                3.1 +/-    0.65       6.6 +/-    0.65  0.040 / 0.070
G06     178.3          29.8               11.5 +/-    1.69      20.2 +/-    1.69  0.040 / 0.060
G13     246.0          26.7                7.3 +/-    1.90      13.7 +/-    1.90  0.020 / 0.020
G15     278.0          14.6                4.2 +/-    1.24      10.5 +/-    1.24  0.020 / 0.030
G17     350.7          74.7                7.5 +/-    0.39       7.7 +/-    0.39  0.250 / 0.300
G19     261.6          66.6                6.2 +/-    0.76       6.7 +/-    0.76  0.310 / 0.340
G24     318.8          11.9                0.6 +/-   15.14       1.5 +/-   15.14  0.060 / 0.140
G28     62.6           49.8                6.2 +/-    1.31       7.9 +/-    1.31  0.070 / 0.130
G30     152.2          35.2                9.8 +/-    1.37      15.6 +/-    1.37  0.080 / 0.190