PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/04-07:27:50
G01     116.3          18.3                5.2 +/-    2.40      12.0 +/-    2.40  0.030 / 0.040
G07     85.4           64.9                5.0 +/-    0.70       5.5 +/-    0.70  0.030 / 0.040
G08     45.0           32.1                2.4 +/-    0.99       4.1 +/-    0.99  0.030 / 0.050
G09     175.6          24.0                6.6 +/-    1.83      13.3 +/-    1.83  0.030 / 0.050
G11     107.7          41.7                5.3 +/-    1.05       7.5 +/-    1.05  0.070 / 0.270
G13     316.6          21.6                0.3 +/-    2.25       0.7 +/-    2.25  0.070 / 0.270
G17     201.6          24.1                4.0 +/-    2.60       8.0 +/-    2.60  0.100 / 0.190
G18     92.4           21.3                5.1 +/-    1.01      10.8 +/-    1.01  0.080 / 0.240
G28     283.9          52.7                5.3 +/-    0.65       6.5 +/-    0.65  0.160 / 0.360
G30     343.2          68.1                2.5 +/-    1.34       2.7 +/-    1.34  0.170 / 0.350