PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-09:42:50
G02     217.5          64.2                5.1 +/-    0.96       5.6 +/-    0.96  0.220 / 0.330
G06     58.9           77.9                4.9 +/-    0.60       5.0 +/-    0.60  0.180 / 0.320
G12     319.0          36.7                4.4 +/-    1.80       6.7 +/-    1.80  0.050 / 0.070
G17     60.3           29.9                4.3 +/-    1.43       7.5 +/-    1.43  0.070 / 0.060
G19     43.8           46.5                2.9 +/-    0.88       3.8 +/-    0.88  0.050 / 0.060
G24     264.1          40.8                5.4 +/-    2.96       7.7 +/-    2.96  0.050 / 0.070
G28     124.6          11.1                7.0 +/-    1.42      19.0 +/-    1.42  0.050 / 0.060