PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/20-07:58:00
G01     102.1          27.9                6.5 +/-    1.79      11.8 +/-    1.79  0.030 / 0.030
G07     114.4          53.3                6.0 +/-    0.77       7.3 +/-    0.77  0.040 / 0.030
G08     41.4           14.1                1.0 +/-    1.16       2.5 +/-    1.16  0.040 / 0.040
G11     80.2           42.1                5.6 +/-    0.55       7.9 +/-    0.55  0.040 / 0.050
G13     305.3          31.8                4.6 +/-    1.01       7.7 +/-    1.01  0.080 / 0.140
G17     207.1          45.1                6.7 +/-    1.17       9.1 +/-    1.17  0.060 / 0.140
G18     73.0           24.0                3.5 +/-    0.78       7.0 +/-    0.78  0.090 / 0.170
G19     210.9          14.1                1.7 +/-    4.68       4.4 +/-    4.68  0.080 / 0.150
G28     324.7          61.3                3.2 +/-    0.98       3.6 +/-    0.98  0.070 / 0.140
G30     38.6           80.0                5.5 +/-    0.76       5.6 +/-    0.76  0.060 / 0.170