PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-07:27:50
G01     229.6          21.5                5.3 +/-    2.22      11.2 +/-    2.22  0.030 / 0.030
G03     299.8          64.6                5.2 +/-    0.69       5.6 +/-    0.69  0.030 / 0.030
G14     80.2           28.5                4.3 +/-    1.23       7.8 +/-    1.23  0.030 / 0.040
G16     151.2          38.2                5.3 +/-    0.44       8.0 +/-    0.44  0.040 / 0.050
G18     206.1          10.7                4.3 +/-    2.82      11.7 +/-    2.82  0.100 / 0.160
G22     236.1          74.3                4.9 +/-    0.26       5.1 +/-    0.26  0.180 / 0.140
G23     305.0          36.8                4.6 +/-    1.63       7.1 +/-    1.63  0.080 / 0.150
G26     109.2          52.3                5.1 +/-    0.63       6.3 +/-    0.63  0.080 / 0.170
G31     43.8           36.3                3.7 +/-    1.22       5.7 +/-    1.22  0.170 / 0.360
G32     93.7           11.1                4.5 +/-    0.86      12.2 +/-    0.86  0.190 / 0.310