PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-14:42:50
G01     104.5          26.0                8.0 +/-    1.32      15.3 +/-    1.32  0.050 / 0.050
G07     111.7          52.5                8.9 +/-    0.36      10.9 +/-    0.36  0.050 / 0.060
G08     41.9           20.6                7.8 +/-    2.79      16.9 +/-    2.79  0.070 / 0.060
G09     175.1          13.4                8.7 +/-    1.64      22.5 +/-    1.64  0.090 / 0.080
G11     85.9           43.5               10.1 +/-    1.20      13.9 +/-    1.20  0.040 / 0.050
G13     307.7          30.7                9.3 +/-    1.26      16.0 +/-    1.26  0.030 / 0.040
G17     206.2          37.3               10.2 +/-    1.03      15.5 +/-    1.03  0.070 / 0.080
G18     77.3           24.2                8.0 +/-    1.00      16.0 +/-    1.00  0.060 / 0.080
G28     309.8          59.0                7.6 +/-    1.13       8.7 +/-    1.13  0.070 / 0.140
G30     44.5           78.9                8.0 +/-    0.69       8.1 +/-    0.69  0.070 / 0.140