PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-20:12:50
G01     122.6          14.6               15.5 +/-    2.36      39.0 +/-    2.36  0.020 / 0.040
G07     78.6           64.5               11.7 +/-    0.68      12.9 +/-    0.68  0.030 / 0.030
G08     46.6           34.2                9.7 +/-    1.32      15.6 +/-    1.32  0.060 / 0.100
G09     178.1          31.8               12.6 +/-    1.04      21.2 +/-    1.04  0.100 / 0.110
G11     110.7          38.5               15.4 +/-    1.18      22.9 +/-    1.18  0.070 / 0.090
G13     319.3          16.4                9.5 +/-    3.00      22.9 +/-    3.00  0.080 / 0.130
G17     199.8          21.0               13.9 +/-    2.38      30.0 +/-    2.38  0.150 / 0.320
G18     96.1           18.8               13.0 +/-    1.10      29.4 +/-    1.10  0.130 / 0.280
G28     279.2          52.5               11.6 +/-    2.75      14.2 +/-    2.75  0.030 / 0.040
G30     340.6          65.5               10.0 +/-    0.61      10.9 +/-    0.61  0.030 / 0.040