PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-22:58:00
G01     73.5           33.2                8.9 +/-    0.90      14.6 +/-    0.90  0.060 / 0.200
G07     136.1          33.5               12.1 +/-    1.16      19.8 +/-    1.16  0.070 / 0.200
G11     56.9           34.1                8.1 +/-    2.06      13.1 +/-    2.06  0.070 / 0.130
G13     278.0          37.5               10.4 +/-    1.51      15.8 +/-    1.51  0.090 / 0.120
G15     304.1          15.1                6.9 +/-    0.92      17.1 +/-    0.92  0.030 / 0.040
G17     229.0          63.3               10.8 +/-    1.09      11.9 +/-    1.09  0.040 / 0.050
G18     51.3           19.6                8.8 +/-    4.36      19.5 +/-    4.36  0.050 / 0.080
G19     222.6          39.6               11.9 +/-    1.41      17.5 +/-    1.41  0.070 / 0.060
G28     16.6           59.6                8.4 +/-    1.23       9.5 +/-    1.23  0.080 / 0.110
G30     132.9          61.1               10.6 +/-    0.74      11.9 +/-    0.74  0.060 / 0.090