PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-10:12:50
G01     64.1           31.1                4.3 +/-    1.25       7.4 +/-    1.25  0.030 / 0.050
G07     139.4          25.3                6.2 +/-    0.90      12.1 +/-    0.90  0.030 / 0.040
G11     51.1           29.4                4.2 +/-    0.74       7.5 +/-    0.74  0.050 / 0.140
G13     267.3          37.8                8.7 +/-    1.52      13.2 +/-    1.52  0.050 / 0.140
G15     298.9          15.7                3.3 +/-    1.78       8.2 +/-    1.78  0.040 / 0.040
G17     239.1          70.8                8.4 +/-    0.65       8.9 +/-    0.65  0.030 / 0.040
G18     45.0           15.6                2.3 +/-    1.72       5.6 +/-    1.72  0.060 / 0.120
G19     226.9          48.2                9.8 +/-    1.40      12.7 +/-    1.40  0.070 / 0.120
G28     13.3           60.7                4.8 +/-    0.74       5.5 +/-    0.74  0.040 / 0.060
G30     140.3          59.3                7.4 +/-    0.83       8.5 +/-    0.83  0.040 / 0.060