PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-18:28:10
G02     211.1          50.8               16.2 +/-    0.53      20.2 +/-    0.53  0.060 / 0.070
G06     82.3           78.0               14.1 +/-    0.36      14.4 +/-    0.36  0.070 / 0.060
G12     316.7          32.2               11.0 +/-    1.99      18.4 +/-    1.99  0.030 / 0.020
G17     50.9           37.4               10.0 +/-    0.94      15.1 +/-    0.94  0.040 / 0.020
G19     25.7           56.2               12.8 +/-    1.10      15.0 +/-    1.10  0.090 / 0.120
G24     274.4          42.9               13.2 +/-    3.26      18.4 +/-    3.26  0.060 / 0.100
G28     117.2          19.4               12.2 +/-    1.27      27.2 +/-    1.27  0.040 / 0.040