PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-23:57:20
G02     200.4          26.1               11.9 +/-    2.14      22.7 +/-    2.14  0.040 / 0.040
G06     169.1          58.3               12.2 +/-    0.39      14.1 +/-    0.39  0.030 / 0.030
G17     20.3           60.0               11.5 +/-    0.93      13.1 +/-    0.93  0.080 / 0.100
G19     333.8          70.0               11.5 +/-    0.66      12.2 +/-    0.66  0.080 / 0.100
G24     307.3          32.2               12.2 +/-    0.72      20.4 +/-    0.72  0.090 / 0.100
G28     92.8           37.0               12.7 +/-    1.30      19.5 +/-    1.30  0.040 / 0.080