PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-19:58:10
G01     58.1           29.8               14.3 +/-    2.11      25.2 +/-    2.11  0.200 / 0.310
G07     143.2          20.8               16.5 +/-    1.64      35.7 +/-    1.64  0.130 / 0.270
G11     47.7           22.9               11.6 +/-    1.46      23.9 +/-    1.46  0.060 / 0.140
G13     260.3          34.5               18.6 +/-    1.76      29.9 +/-    1.76  0.100 / 0.140
G15     292.5          16.2               15.6 +/-    1.20      37.6 +/-    1.20  0.040 / 0.070
G17     259.8          74.7               17.5 +/-    0.41      18.1 +/-    0.41  0.040 / 0.060
G18     41.4           11.9               11.1 +/-    2.39      29.7 +/-    2.39  0.130 / 0.190
G19     234.6          51.0               19.0 +/-    1.78      23.7 +/-    1.78  0.310 / 0.440
G28     39.4           55.9               13.5 +/-    0.64      15.9 +/-    0.64  0.040 / 0.050
G30     144.9          49.4               16.8 +/-    0.63      21.3 +/-    0.63  0.040 / 0.040