PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-19:13:10
G01     127.5          10.6              -12.7 +/-   37.04     -35.1 +/-   37.04  0.030 / 0.030
G07     63.8           66.7               13.0 +/-    0.49      14.0 +/-    0.49  0.030 / 0.030
G08     50.8           39.5               11.6 +/-    1.44      17.1 +/-    1.44  0.130 / 0.090
G09     178.9          38.6               14.5 +/-    1.04      21.6 +/-    1.04  0.080 / 0.090
G11     118.0          35.3               15.1 +/-    0.69      23.8 +/-    0.69  0.080 / 0.070
G17     199.0          14.5               16.9 +/-    3.44      42.5 +/-    3.44  0.070 / 0.080
G18     102.3          16.0               13.2 +/-    2.73      32.1 +/-    2.73  0.090 / 0.320
G27     37.6           9.7                 9.6 +/-    1.30      27.0 +/-    1.30  0.120 / 0.350
G28     269.9          48.9               15.4 +/-    3.31      19.7 +/-    3.31  0.030 / 0.040
G30     333.0          60.7               11.9 +/-    0.47      13.4 +/-    0.47  0.030 / 0.040