PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-08:57:50
G01     222.2          13.0                5.0 +/-    2.79      12.9 +/-    2.79  0.040 / 0.030
G03     271.3          69.5                5.8 +/-    0.68       6.1 +/-    0.68  0.040 / 0.030
G09     298.1          12.7                2.1 +/-   16.69       5.5 +/-   16.69  0.140 / 0.710
G14     90.7           22.8                4.3 +/-    1.09       8.8 +/-    1.09  0.160 / 0.390
G16     137.1          51.7                7.1 +/-    0.67       8.8 +/-    0.67  0.040 / 0.050
G22     203.1          64.8                6.3 +/-    0.36       6.9 +/-    0.36  0.040 / 0.040
G23     312.7          42.8                4.9 +/-    0.94       6.8 +/-    0.94  0.120 / 0.140
G26     82.7           53.3                6.1 +/-    0.94       7.5 +/-    0.94  0.090 / 0.180
G31     48.3           25.2                4.5 +/-    2.07       8.8 +/-    2.07  0.040 / 0.090