PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-06:12:50
G01     56.7           28.5                3.1 +/-    1.06       5.7 +/-    1.06  0.030 / 0.050
G06     178.7          16.3                4.5 +/-    1.84      10.8 +/-    1.84  0.030 / 0.040
G07     142.4          21.0                7.7 +/-    1.57      16.6 +/-    1.57  0.120 / 0.190
G11     48.6           26.2                4.1 +/-    2.69       7.8 +/-    2.69  0.150 / 0.230
G13     259.2          35.8                7.1 +/-    1.85      11.0 +/-    1.85  0.040 / 0.060
G15     290.2          17.1                3.6 +/-    1.70       8.6 +/-    1.70  0.050 / 0.060
G17     263.2          77.8                1.4 +/-    0.64       1.4 +/-    0.64  0.030 / 0.030
G19     233.4          54.4                8.0 +/-    2.30       9.6 +/-    2.30  0.030 / 0.030
G28     22.9           60.0                4.8 +/-    1.10       5.4 +/-    1.10  0.120 / 0.070
G30     145.7          54.8                8.3 +/-    0.61       9.9 +/-    0.61  0.090 / 0.060