PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-11:12:30
G02     217.5          63.6               10.7 +/-    1.23      11.8 +/-    1.23  0.190 / 0.360
G06     56.9           76.5                7.4 +/-    0.51       7.6 +/-    0.51  0.190 / 0.350
G12     319.0          36.9                5.8 +/-    1.40       8.9 +/-    1.40  0.050 / 0.080
G17     60.6           29.4                3.8 +/-    1.57       6.8 +/-    1.57  0.050 / 0.070
G19     44.0           46.4                3.7 +/-    0.70       4.9 +/-    0.70  0.040 / 0.060
G24     264.3          40.8                7.1 +/-    2.31      10.2 +/-    2.31  0.040 / 0.070
G28     124.6          11.1                8.6 +/-    1.79      23.4 +/-    1.79  0.040 / 0.060