PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/15-04:58:10
G01     45.5           21.3                2.8 +/-    2.71       5.9 +/-    2.71  0.040 / 0.060
G06     176.1          28.4                6.6 +/-    2.81      12.0 +/-    2.81  0.050 / 0.060
G07     147.0          9.6                 8.1 +/-    3.35      22.7 +/-    3.35  0.190 / 0.390
G11     44.8           16.3                3.6 +/-    2.46       8.8 +/-    2.46  0.130 / 0.280
G13     245.0          29.2                4.7 +/-    1.13       8.4 +/-    1.13  0.040 / 0.040
G15     276.8          15.5                2.3 +/-    2.68       5.6 +/-    2.68  0.040 / 0.040
G17     336.6          77.5                5.7 +/-    0.70       5.9 +/-    0.70  0.040 / 0.050
G19     253.9          65.3                6.8 +/-    0.46       7.4 +/-    0.46  0.040 / 0.070
G28     45.2           57.0                6.3 +/-    0.70       7.4 +/-    0.70  0.190 / 0.310
G30     152.7          41.9                8.1 +/-    0.93      11.4 +/-    0.93  0.160 / 0.370