PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-11:42:30
G01     45.7           21.7                2.9 +/-    1.23       6.1 +/-    1.23  0.190 / 0.330
G06     177.9          29.7                7.5 +/-    1.72      13.3 +/-    1.72  0.210 / 0.340
G13     246.7          27.0                6.7 +/-    0.58      12.5 +/-    0.58  0.040 / 0.070
G15     278.9          14.7                4.3 +/-    2.65      10.8 +/-    2.65  0.040 / 0.080
G17     349.8          75.0                5.4 +/-    0.54       5.6 +/-    0.54  0.090 / 0.240
G19     260.3          66.3                4.0 +/-    0.79       4.3 +/-    0.79  0.100 / 0.230
G24     318.9          11.4               -6.9 +/-   26.39     -18.7 +/-   26.39  0.070 / 0.120
G28     61.7           50.1                3.7 +/-    0.89       4.7 +/-    0.89  0.080 / 0.140
G30     152.1          36.2                6.7 +/-    1.93      10.4 +/-    1.93  0.030 / 0.030