PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/07-00:27:50
G01     101.6          27.8                6.7 +/-    1.62      12.4 +/-    1.62  0.090 / 0.140
G07     115.7          50.5                7.4 +/-    0.50       9.2 +/-    0.50  0.080 / 0.140
G08     41.4           13.9                3.5 +/-    2.34       8.8 +/-    2.34  0.040 / 0.050
G11     79.5           42.1               -1.7 +/-    0.95      -2.4 +/-    0.95  0.060 / 0.050
G13     305.0          32.2                5.6 +/-    2.15       9.4 +/-    2.15  0.040 / 0.040
G17     206.9          45.5                8.5 +/-    0.79      11.3 +/-    0.79  0.040 / 0.030
G18     70.5           23.2                5.3 +/-    1.62      10.8 +/-    1.62  0.060 / 0.160
G19     210.3          16.8                0.7 +/-    9.39       1.6 +/-    9.39  0.080 / 0.170
G28     321.6          60.8                4.9 +/-    0.57       5.5 +/-    0.57  0.090 / 0.150
G30     47.8           80.0                6.5 +/-    0.59       6.5 +/-    0.59  0.090 / 0.140