PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/14-07:28:00
G07     355.3          64.2                4.6 +/-    0.90       5.1 +/-    0.90  0.030 / 0.040
G08     77.3           51.1                7.9 +/-    1.06       9.8 +/-    1.06  0.030 / 0.040
G09     180.8          60.6               10.1 +/-    1.69      11.5 +/-    1.69  0.070 / 0.140
G11     137.0          20.0                6.5 +/-    0.97      14.2 +/-    0.97  0.070 / 0.110
G23     159.0          31.9                8.7 +/-    1.16      14.7 +/-    1.16  0.040 / 0.040
G27     45.6           24.0                2.8 +/-    1.28       5.6 +/-    1.28  0.040 / 0.040
G28     247.7          38.6                9.6 +/-    2.40      14.3 +/-    2.40  0.040 / 0.050
G30     310.6          42.1                3.4 +/-    1.46       4.7 +/-    1.46  0.030 / 0.050