PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-14:58:00
G01     90.6           31.0                7.6 +/-    1.49      13.0 +/-    1.49  0.040 / 0.050
G07     125.0          42.1               10.3 +/-    0.40      14.5 +/-    0.40  0.040 / 0.050
G08     42.2           10.3                9.0 +/-    2.63      24.9 +/-    2.63  0.040 / 0.060
G11     69.3           40.8                8.6 +/-    0.98      12.3 +/-    0.98  0.080 / 0.070
G13     295.1          36.7                8.0 +/-    2.79      12.4 +/-    2.79  0.030 / 0.070
G17     213.0          50.0               11.3 +/-    0.66      14.2 +/-    0.66  0.040 / 0.050
G18     63.8           23.7                8.2 +/-    1.66      16.6 +/-    1.66  0.030 / 0.060
G19     213.2          27.1                9.0 +/-    1.32      16.7 +/-    1.32  0.040 / 0.050
G28     334.1          61.3                8.0 +/-    0.52       8.9 +/-    0.52  0.090 / 0.170
G30     104.7          74.9               10.2 +/-    0.88      10.5 +/-    0.88  0.120 / 0.170