PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/28-09:27:50
G01     68.3           31.9                4.1 +/-    1.94       6.9 +/-    1.94  0.070 / 0.110
G07     137.4          29.0                6.0 +/-    1.07      10.8 +/-    1.07  0.080 / 0.100
G11     53.7           32.4                3.0 +/-    1.40       5.0 +/-    1.40  0.080 / 0.110
G13     272.2          38.6                7.7 +/-    1.62      11.4 +/-    1.62  0.090 / 0.130
G15     301.9          15.3                2.8 +/-    1.84       6.8 +/-    1.84  0.120 / 0.220
G17     231.9          67.9                7.6 +/-    0.63       8.1 +/-    0.63  0.170 / 0.240
G18     47.8           17.6                2.6 +/-    1.21       6.0 +/-    1.21  0.110 / 0.080
G19     223.7          44.7                7.1 +/-    1.95       9.6 +/-    1.95  0.080 / 0.080
G28     5.7            61.2                4.3 +/-    1.12       4.8 +/-    1.12  0.030 / 0.040
G30     136.7          63.4                7.9 +/-    0.59       8.7 +/-    0.59  0.040 / 0.040