PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/29-21:57:40
G02     217.7          62.3               13.4 +/-    1.09      15.0 +/-    1.09  0.050 / 0.080
G06     52.8           71.8               11.7 +/-    0.45      12.3 +/-    0.45  0.050 / 0.090
G12     319.5          38.8                9.7 +/-    0.69      14.3 +/-    0.69  0.060 / 0.060
G17     57.5           33.3                8.8 +/-    1.65      14.5 +/-    1.65  0.050 / 0.080
G19     39.6           49.3               10.0 +/-    1.80      12.7 +/-    1.80  0.030 / 0.020
G24     262.3          41.2               14.7 +/-    3.32      20.9 +/-    3.32  0.030 / 0.020
G28     124.0          12.1               13.1 +/-    1.93      34.8 +/-    1.93  0.040 / 0.050